I'm in no hurry to upgrade myself, however that dual card is monstrous…
For those who prefer a single powerful gfx core gpu configuration you should check out Zotac's Extreme edition:
http://en.expreview.com/2012/04/08/z…iew/22203.html
With core voltage adjustable to 1.5v max, highest GPU clock achieved under air cooling is 1.4GHz (@1.35v).
Quite beastly, IMO.